Pipe-boiler.



'No. 841,368. PATENTED JAN. 15, 1907. J. L. ANDERSON.

PIPE BOILER.

APPLICATION FILED JAN.17, 1906.

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PATENTED JAN; 15, 1907..

J. L. ANDERSON.

PIPE BOILER. APPLICATION FILED JAN. 17, 1906.

2 SHEETSSHEET 2.

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UNITED s'rAirns PATENT @FFTCE.

PIPE-BOILER.

Specification of Letters Patent.

Patented Jan. 15, 1907.

Application filed January 17, 1906. Serial No. 296,510.

To a 11/71/0172 it may concern.-

Be it known that I, JOHN L. ANDERSON, a

citizen of the United States, residing at Seattle, in the county of Kingand State of Washington, have, invented certain new and usefulImprovements in Pipe-Boilers, of which the following is a specification,reference being had therein to the accompanying drawings, in whichFigure 1 is a transverse section, and Fig. 2 a longitudinal section, ofa pipe-boiler embodying my improvements.

The object of the invention is the provision of an efficientsteam-generator which is of compact andinexpensive construction.

The invention consists in the novel construction, disposition, andcombination of parts, as will be hereinafter described, and moreparticularly pointed out in the appended claims.

In the said drawings the reference-numeral 5 designates the inclosingcase or shell of my steam-generator, which case is made of sheet-iron orother suit able material and is provided with a stoke-opening 6 in thefront face and a smoke-outlet 7 at the top. The inner surface of thecase and for some distance above the grate 8 is. desirably lined withfire-brick, clay, or asbestos, as at 9.

Extending longitudinally through the case and adjacent to its top is asteam-drum 10, which is connected exteriorly of the case by inclinedwater-legs 11 with the longitudinal mud-drums 12, positioned inproximity to the lower edges of the side walls of the case. Projectingfrom the said mud-drums are upflow water-pipes 13 and 14, which arerespectively connected with enlarged pro 'longations 13 and 14, whilethe pipes 13 upon one side are communicatively connected by horizontalpipes 15 with the like members upon the other side. Arranged at eachside of the steam-drum and connected therewith are inclined wing-pipes16 and 17, which are connected by return-flow supporting-pipes 18 andsteam-generating coils 19 and 20 with the portions 13 and 14 of theaforesaid upflowpipes.

Interiorly of the st eam-drum and opposite the discharge-orifices of thesaid wing-pipes are shield-plates 21 to prevent the steam entering thedrum coming into immediate contact with the body of contained steam, andsuch shield-plates also serve to collect such unevaporated water as maybe conveyed with the incoming steam, which water gravitates to thebottom of the drum and thence is returned to the mud-drums through thesaid water-legs.

A perforated dry pipe 22 is provided within the steam-drum and hasoutlet connections, such as 23 and 24, through which the steam iswithdrawn for service. The feedwater to supply the boiler passes throughan intake-pipe 25, thence through series of pipecoils 26, positionedwithin the case in proximity of the said smokeoutlet, and thence intothe steam-drum through pipes 27 and 28. The lastna med pipe is desirablyar ranged horizontally and adjacent of the bottom of the steam-drum andis desirably perforated in order to distribute the water throughout itslength upon the bottom of the drum, from where it enters the saidwaterlegs and passes, as aforesaid, therethough to the mud-drums.

Cross-bars 29, seated upon the top of the drum and having their endssustained by rods 29 from the casing, mayadvantageously be employed forsupporting the said feed-water coils.

Baffle-plates 30 and 30 are respectively provided at the front and rearof the casing and at diflerent elevations to direct the hot combustivegases emanating from the fire to act most effectively upon the variousaforesaid pipes and coils within the casing.

To further utilize the heat of the fire, grilles of pipe 31 and 31 arerespectively provided at the front and rear of the furnace portion ofthe case.

The operation of my invention may be briefly stated as follows: Thewater passing through the pipe-coils 26 has its temperature raised to ahigh degree as it is discharged into the steam-drum 10 wherein it mixeswith the condensations, if any, which prevail therein,

legs 11 to the mud-drums 12. The coils 19 and 20, which are subjected tothe heat of the fire, effect the generation of steam, and a consequentmovement is imparted to the water through the upflow-pipes 13 and 14 toreplace such water when converted into steam. The steam is deliveredfrom the coils 19 into the wings-pipes 16 and 17, from whence it flowsinto the steam-drum for use. Should water in an unevaporated stateaccompany the steam from the generatingcoils, it is ordinarily trappedin the said wing-pipes and returned therefrom to the pipes 13 and 14 bythe pipes 18. Under and the mixture is conveyed by the water exceptionalconditions, however, this may not suffice to liberate all of the water,and it is further separated by the shieldplates within the steamdrum, asheretofore explained.

The advantages of the invention reside principally in its effectivenessto cause a rapid and complete circulation of the contained water, thedisposal of the pipes and deflectors to subject the steam-generatingmembers to the full effect of the heat, and in the means for separatingthe steam from the water immediately before and upon its entry into thesteam-drums.

In its construction also the invention is such that access is to be hadto the several parts, which are arranged andassembled so as to permittheir being independently removed.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, is

1. The combination with the steam and mud drums connected by water legs,of water-upflow pipes projecting from said mud-drums and terminating inenlarged portions, wing-pipes connected directly to said steam-drum,supporting connections between the said wing-pipes and the upflowpipes,and steam-generating coils connecting the wing-pipes on one side of theboiler to the upflow-pipes on the other side of the boiler.

2. A pipe-boiler, comprising mud-drums, a steam-drum, water-legsconnecting the mud and steam drums, two series of upflow pipes connectedto each of said mud-drums,

one series of said upflow-pipes of one of the mud-drums being connectedwith those of like series upon the other mud-drum, a plurality ofwing-pipes upon each side of said steam-drum and severally connectedthereto, steam-generating coils connecting said upflow -pipes with saidwing-pipes and the shield-plates within said steam-drum.

3. In a pipe-boiler, the combination with a steam-drum providedinteriorly with shield-plates, said plates, a perforated dry pipe withinthe said drum, two mud-drums, connections between each of said muddrumsat its opposite ends with said steam-drum, upflow pipes extending fromsaid muddrums, a plurality of steam-generating coils connecting saidupflow-pipes with inclined wing-pipes disposed upon the opposite side ofthe steam-drum, and the said wing-pipes.

4. In a pipe-boiler, the combination with a steam-drum providedinteriorly with shield-plates, said plates, of two mud-drums,connections between each of said mud-drums at its opposite ends withsaid steam-drum, upflow pipes extending from said muddrums, a pluralityof steam-generating coils connecting the upfiow-pipes upon one side ofthe drum with inclined wing-pipes disposed upon the other side of thesteam-drum, and the said wing-pipes.

In testimony whereof I affix my signature in presence of two Witnesses.

JOHN L. ANDERSON;

lVitnesses:

PIERRE BARNES, L. B. MAXSON.

